body{
    padding: 5px;
    min-width: 1210px;
}
#main_box {
    width: 750px;
}
.panel-body {
    padding: 0;
}
.panel {
    width: 750px;
}
.item {
    width: 750px;
    position: relative;
    cursor: move;
}
.item img{
    width: 100%;
}
.item p{
    line-height: 1.6;
    padding: 10px 10px;
    font-size: 16px;
    margin: 0;
}
.minH60 {
    min-height: 60px;
}
.item h3 {
    line-height: 1.6;
    padding: 10px 10px;
    font-size: 18px;
    margin: 0;
    font-weight: bold;
}
#but_box {
    width: 750px;
    padding: 10px;
    text-align: center;
}
.mask {
    position: absolute;
    width: 100%;
    height: 100%;
    background: rgba(229,229,229,0.85);
    z-index: 10;
    top: 0;
    left: 0;
    text-align: center;
}
.mask .but_mask {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -15px;
    margin-left: -40px;
}
.mask .but_mask button {
    margin: 0 5px;
}
#box_editor {
    position: absolute;
    width: 450px;
    left: 760px;
    top: 10px;
}
.editor {
    padding-left: 12px;
}
.editor .inner {
    border: 1px solid #e7e7eb;
    background-color: #f4f5f9;
    border-radius: 4px;
    -webkit-box-shadow: 0 1px 1px rgba(0,0,0,.05);
    box-shadow: 0 1px 1px rgba(0,0,0,.05);
    padding: 20px;
    min-height: 350px;
}
#box_editor .arrow_out {
    display: inline-block;
    width: 0;
    height: 0;
    border-width: 12px;
    border-style: dashed;
    border-color: transparent;
    border-left-width: 0;
    border-right-color: #e7e7eb;
    border-right-style: solid;
    top: 30px;
    left: 0;
    margin-top: 0;
}
#box_editor .arrow_in {
    display: inline-block;
    width: 0;
    height: 0;
    border-width: 12px;
    border-style: dashed;
    border-color: transparent;
    border-left-width: 0;
    border-right-color: #f4f5f9;
    border-right-style: solid;
    top: 30px;
    left: 1px;
    margin-top: 0
}
#box_editor .arrow {
    position: absolute;
}

.clone, .drop {
    height: 100px;
    line-height: 60px;
    text-align: center;
    font-size: 30px;
    color: #fff;
    margin: 10px;
}
.clone {
    background: #ddd;
}
.drop {
    border: 4px dashed #666;
}
.over{
    border-color: #F5AD1C;
}
.enter {
    background: #FFEDB3;
}